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    <article class="post">
        <header>
            <h1 class="post-title">《在Flutter中的Sliver3》</h1>
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        <date class="post-meta meta-date">
            2021年6月6日
        </date>
        
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            <span>|</span>
            
            <span class="meta-category"><a href='/categories/Flutter'>Flutter</a></span>
            
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            <span id="busuanzi_container_page_pv">|<span id="busuanzi_value_page_pv"></span><span>
                    阅读</span></span>
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                <div class="toc-title">文章目录</div>
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        <div class="post-content">
            <blockquote>
<p>本文主要介绍</p>
</blockquote>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/material.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/rendering.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:http/http.dart&#39;</span> <span style="color:#66d9ef">as</span> http;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;dart:convert&#39;</span> <span style="color:#66d9ef">as</span> convert;

<span style="color:#66d9ef">void</span> main() {
  runApp(MyApp());
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyApp</span> <span style="color:#66d9ef">extends</span> StatelessWidget {
  <span style="color:#75715e">// This widget is the root of your application.
</span><span style="color:#75715e"></span>  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> MaterialApp(
      title: <span style="color:#e6db74">&#39;Flutter Demo&#39;</span>,
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: <span style="color:#e6db74">&#39;Flutter Demo Home Page&#39;</span>),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyHomePage</span> <span style="color:#66d9ef">extends</span> StatefulWidget {
  MyHomePage({Key key, <span style="color:#66d9ef">this</span>.title}) <span style="color:#f92672">:</span> <span style="color:#66d9ef">super</span>(key: key);

  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  _MyHomePageState createState() <span style="color:#f92672">=&gt;</span> _MyHomePageState();
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyHomePageState</span> <span style="color:#66d9ef">extends</span> State<span style="color:#f92672">&lt;</span>MyHomePage<span style="color:#f92672">&gt;</span> {
  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> Scaffold(
      body: DefaultTextStyle(
        style: TextStyle(fontSize: <span style="color:#ae81ff">28</span>, color: Colors.red),
        child: CustomScrollView(
          <span style="color:#75715e">///视窗 里面比外边大的一个东西哦哦、
</span><span style="color:#75715e"></span>          slivers: <span style="color:#f92672">&lt;</span>Widget<span style="color:#f92672">&gt;</span>[
            SliverAppBar(
              floating: <span style="color:#66d9ef">true</span>, <span style="color:#75715e">//往下拉时第一时间显示标题 配合snap使用
</span><span style="color:#75715e"></span>              <span style="color:#75715e">// pinned: true, //一直显示
</span><span style="color:#75715e"></span>              snap: <span style="color:#66d9ef">true</span>, <span style="color:#75715e">//轻轻一拉就都显示
</span><span style="color:#75715e"></span>              stretch: <span style="color:#66d9ef">true</span>, <span style="color:#75715e">//允许向下拉伸
</span><span style="color:#75715e"></span>              title: Text(<span style="color:#e6db74">&#34;标题&#34;</span>),
              expandedHeight: <span style="color:#ae81ff">200</span>,
            ),

            <span style="color:#75715e">///用于固定元素尺寸的列表
</span><span style="color:#75715e"></span>          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () <span style="color:#66d9ef">async</span> {
          <span style="color:#66d9ef">final</span> url <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;https://h5.48.cn/resource/jsonp/allmembers.php?gid=10&#34;</span>;
          <span style="color:#66d9ef">final</span> res <span style="color:#f92672">=</span> <span style="color:#66d9ef">await</span> http.<span style="color:#66d9ef">get</span>(url);

          <span style="color:#66d9ef">if</span> (res.statusCode <span style="color:#f92672">!=</span> <span style="color:#ae81ff">200</span>) {
            <span style="color:#66d9ef">throw</span> (<span style="color:#e6db74">&#34;erroe&#34;</span>);
          }

          print(res.body);
          <span style="color:#66d9ef">final</span> json <span style="color:#f92672">=</span> convert.jsonDecode(res.body);

          <span style="color:#66d9ef">final</span> members <span style="color:#f92672">=</span> json[<span style="color:#e6db74">&#34;rows&#34;</span>].map<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span>((row) {
            <span style="color:#66d9ef">return</span> Member(id: row[<span style="color:#e6db74">&#34;sid&#34;</span>], name: row[<span style="color:#e6db74">&#34;sname&#34;</span>]);
          });
          members.forEach((m) <span style="color:#f92672">=&gt;</span> print(m));
        },
        child: Icon(Icons.add),
      ), <span style="color:#75715e">// This trailing comma makes auto-formatting nicer for build methods.
</span><span style="color:#75715e"></span>    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Member</span> {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> id;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> name;

  Member({<span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.id, <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.name});

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">String</span> toString() <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;</span><span style="color:#e6db74">$</span>id<span style="color:#e6db74">:</span><span style="color:#e6db74">$</span>name<span style="color:#e6db74">&#34;</span>;
}

</code></pre></div><p>
        <a data-fancybox="gallery" href="https://luckly007.oss-cn-beijing.aliyuncs.com/img/image-20210807224920120.png">
            <img class="mx-auto" alt="image-20210807224920120" src="https://luckly007.oss-cn-beijing.aliyuncs.com/img/image-20210807224920120.png" />
        </a>
    </p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/material.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/rendering.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:http/http.dart&#39;</span> <span style="color:#66d9ef">as</span> http;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;dart:convert&#39;</span> <span style="color:#66d9ef">as</span> convert;

<span style="color:#66d9ef">void</span> main() {
  runApp(MyApp());
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyApp</span> <span style="color:#66d9ef">extends</span> StatelessWidget {
  <span style="color:#75715e">// This widget is the root of your application.
</span><span style="color:#75715e"></span>  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> MaterialApp(
      title: <span style="color:#e6db74">&#39;Flutter Demo&#39;</span>,
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: <span style="color:#e6db74">&#39;Flutter Demo Home Page&#39;</span>),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyHomePage</span> <span style="color:#66d9ef">extends</span> StatefulWidget {
  MyHomePage({Key key, <span style="color:#66d9ef">this</span>.title}) <span style="color:#f92672">:</span> <span style="color:#66d9ef">super</span>(key: key);

  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  _MyHomePageState createState() <span style="color:#f92672">=&gt;</span> _MyHomePageState();
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyHomePageState</span> <span style="color:#66d9ef">extends</span> State<span style="color:#f92672">&lt;</span>MyHomePage<span style="color:#f92672">&gt;</span> {
  List<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span> _members <span style="color:#f92672">=</span> [];
  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> Scaffold(
      appBar: AppBar(),
      body: ListView.builder(
        itemBuilder: (BuildContext co, <span style="color:#66d9ef">int</span> index) {
          <span style="color:#66d9ef">final</span> m <span style="color:#f92672">=</span> _members[index];
          <span style="color:#66d9ef">return</span> ListTile(
            leading: ClipOval(
              child: CircleAvatar(
                radius: <span style="color:#ae81ff">32</span>,
                child: Image.network(
                  m.avatarUrl,
                ),
                backgroundColor: Colors.pink,
              ),
            ),
            title: Text(
              m.id,
            ),
            subtitle: Text(
              m.name,
            ),
          );
        },
        itemCount: _members.length,
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () <span style="color:#66d9ef">async</span> {
          <span style="color:#66d9ef">final</span> url <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;https://h5.48.cn/resource/jsonp/allmembers.php?gid=10&#34;</span>;
          <span style="color:#66d9ef">final</span> res <span style="color:#f92672">=</span> <span style="color:#66d9ef">await</span> http.<span style="color:#66d9ef">get</span>(url);

          <span style="color:#66d9ef">if</span> (res.statusCode <span style="color:#f92672">!=</span> <span style="color:#ae81ff">200</span>) {
            <span style="color:#66d9ef">throw</span> (<span style="color:#e6db74">&#34;erroe&#34;</span>);
          }

          print(res.body);
          <span style="color:#66d9ef">final</span> json <span style="color:#f92672">=</span> convert.jsonDecode(res.body);

          <span style="color:#66d9ef">final</span> members <span style="color:#f92672">=</span> json[<span style="color:#e6db74">&#34;rows&#34;</span>].map<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span>((row) {
            <span style="color:#66d9ef">return</span> Member(id: row[<span style="color:#e6db74">&#34;sid&#34;</span>], name: row[<span style="color:#e6db74">&#34;sname&#34;</span>]);
          });

          setState(() {
            _members <span style="color:#f92672">=</span> members.toList();
          });
          <span style="color:#75715e">// members.forEach();
</span><span style="color:#75715e"></span>        },
        child: Icon(Icons.add),
      ), <span style="color:#75715e">// This trailing comma makes auto-formatting nicer for build methods.
</span><span style="color:#75715e"></span>    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Member</span> {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> id;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> name;

  Member({<span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.id, <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.name});
  <span style="color:#66d9ef">String</span> <span style="color:#66d9ef">get</span> avatarUrl <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;https://www.snh48.com/images/member/zp_</span><span style="color:#e6db74">${</span>id<span style="color:#e6db74">}</span><span style="color:#e6db74">.jpg&#34;</span>;
  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">String</span> toString() <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;</span><span style="color:#e6db74">$</span>id<span style="color:#e6db74">:</span><span style="color:#e6db74">$</span>name<span style="color:#e6db74">&#34;</span>;
}

</code></pre></div><div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/material.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/rendering.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:http/http.dart&#39;</span> <span style="color:#66d9ef">as</span> http;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;dart:convert&#39;</span> <span style="color:#66d9ef">as</span> convert;

<span style="color:#66d9ef">void</span> main() {
  runApp(MyApp());
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyApp</span> <span style="color:#66d9ef">extends</span> StatelessWidget {
  <span style="color:#75715e">// This widget is the root of your application.
</span><span style="color:#75715e"></span>  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> MaterialApp(
      title: <span style="color:#e6db74">&#39;Flutter Demo&#39;</span>,
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: <span style="color:#e6db74">&#39;Flutter Demo Home Page&#39;</span>),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyHomePage</span> <span style="color:#66d9ef">extends</span> StatefulWidget {
  MyHomePage({Key key, <span style="color:#66d9ef">this</span>.title}) <span style="color:#f92672">:</span> <span style="color:#66d9ef">super</span>(key: key);

  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  _MyHomePageState createState() <span style="color:#f92672">=&gt;</span> _MyHomePageState();
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyHomePageState</span> <span style="color:#66d9ef">extends</span> State<span style="color:#f92672">&lt;</span>MyHomePage<span style="color:#f92672">&gt;</span> {
  List<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span> _members <span style="color:#f92672">=</span> [];
  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> Scaffold(
      appBar: AppBar(),
      body: CustomScrollView(
        slivers: [
          SliverList(
            delegate: SliverChildBuilderDelegate((BuildContext co, <span style="color:#66d9ef">int</span> index) {
              <span style="color:#66d9ef">final</span> m <span style="color:#f92672">=</span> _members[index];
              <span style="color:#66d9ef">return</span> ListTile(
                leading: ClipOval(
                  child: CircleAvatar(
                    radius: <span style="color:#ae81ff">32</span>,
                    child: Image.network(
                      m.avatarUrl,
                    ),
                    backgroundColor: Colors.pink,
                  ),
                ),
                title: Text(
                  m.id,
                ),
                subtitle: Text(
                  m.name,
                ),
              );
            }, childCount: _members.length),
          )
        ],
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () <span style="color:#66d9ef">async</span> {
          <span style="color:#66d9ef">final</span> url <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;https://h5.48.cn/resource/jsonp/allmembers.php?gid=10&#34;</span>;
          <span style="color:#66d9ef">final</span> res <span style="color:#f92672">=</span> <span style="color:#66d9ef">await</span> http.<span style="color:#66d9ef">get</span>(url);

          <span style="color:#66d9ef">if</span> (res.statusCode <span style="color:#f92672">!=</span> <span style="color:#ae81ff">200</span>) {
            <span style="color:#66d9ef">throw</span> (<span style="color:#e6db74">&#34;erroe&#34;</span>);
          }

          print(res.body);
          <span style="color:#66d9ef">final</span> json <span style="color:#f92672">=</span> convert.jsonDecode(res.body);

          <span style="color:#66d9ef">final</span> members <span style="color:#f92672">=</span> json[<span style="color:#e6db74">&#34;rows&#34;</span>].map<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span>((row) {
            <span style="color:#66d9ef">return</span> Member(id: row[<span style="color:#e6db74">&#34;sid&#34;</span>], name: row[<span style="color:#e6db74">&#34;sname&#34;</span>]);
          });

          setState(() {
            _members <span style="color:#f92672">=</span> members.toList();
          });
          <span style="color:#75715e">// members.forEach();
</span><span style="color:#75715e"></span>        },
        child: Icon(Icons.add),
      ), <span style="color:#75715e">// This trailing comma makes auto-formatting nicer for build methods.
</span><span style="color:#75715e"></span>    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Member</span> {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> id;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> name;

  Member({<span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.id, <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.name});
  <span style="color:#66d9ef">String</span> <span style="color:#66d9ef">get</span> avatarUrl <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;https://www.snh48.com/images/member/zp_</span><span style="color:#e6db74">${</span>id<span style="color:#e6db74">}</span><span style="color:#e6db74">.jpg&#34;</span>;
  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">String</span> toString() <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;</span><span style="color:#e6db74">$</span>id<span style="color:#e6db74">:</span><span style="color:#e6db74">$</span>name<span style="color:#e6db74">&#34;</span>;
}

</code></pre></div><div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/material.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/rendering.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:http/http.dart&#39;</span> <span style="color:#66d9ef">as</span> http;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;dart:convert&#39;</span> <span style="color:#66d9ef">as</span> convert;

<span style="color:#66d9ef">void</span> main() {
  runApp(MyApp());
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyApp</span> <span style="color:#66d9ef">extends</span> StatelessWidget {
  <span style="color:#75715e">// This widget is the root of your application.
</span><span style="color:#75715e"></span>  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> MaterialApp(
      title: <span style="color:#e6db74">&#39;Flutter Demo&#39;</span>,
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: <span style="color:#e6db74">&#39;Flutter Demo Home Page&#39;</span>),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyHomePage</span> <span style="color:#66d9ef">extends</span> StatefulWidget {
  MyHomePage({Key key, <span style="color:#66d9ef">this</span>.title}) <span style="color:#f92672">:</span> <span style="color:#66d9ef">super</span>(key: key);

  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  _MyHomePageState createState() <span style="color:#f92672">=&gt;</span> _MyHomePageState();
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyHomePageState</span> <span style="color:#66d9ef">extends</span> State<span style="color:#f92672">&lt;</span>MyHomePage<span style="color:#f92672">&gt;</span> {
  List<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span> _members <span style="color:#f92672">=</span> [];
  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> Scaffold(
      appBar: AppBar(),
      body: CustomScrollView(
        slivers: [
          SliverList(
            delegate: SliverChildBuilderDelegate((BuildContext co, <span style="color:#66d9ef">int</span> index) {
              <span style="color:#66d9ef">final</span> m <span style="color:#f92672">=</span> _members[index];
              <span style="color:#66d9ef">return</span> ListTile(
                leading: ClipOval(
                  child: CircleAvatar(
                    radius: <span style="color:#ae81ff">32</span>,
                    child: Image.network(
                      m.avatarUrl,
                    ),
                    backgroundColor: Colors.pink,
                  ),
                ),
                title: Text(
                  m.id,
                ),
                subtitle: Text(
                  m.name,
                ),
                trailing: Text(m.team),
              );
            }, childCount: _members.length),
          )
        ],
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () <span style="color:#66d9ef">async</span> {
          <span style="color:#66d9ef">final</span> url <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;https://h5.48.cn/resource/jsonp/allmembers.php?gid=10&#34;</span>;
          <span style="color:#66d9ef">final</span> res <span style="color:#f92672">=</span> <span style="color:#66d9ef">await</span> http.<span style="color:#66d9ef">get</span>(url);

          <span style="color:#66d9ef">if</span> (res.statusCode <span style="color:#f92672">!=</span> <span style="color:#ae81ff">200</span>) {
            <span style="color:#66d9ef">throw</span> (<span style="color:#e6db74">&#34;erroe&#34;</span>);
          }

          print(res.body);
          <span style="color:#66d9ef">final</span> json <span style="color:#f92672">=</span> convert.jsonDecode(res.body);

          <span style="color:#66d9ef">final</span> members <span style="color:#f92672">=</span> json[<span style="color:#e6db74">&#34;rows&#34;</span>].map<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span>((row) {
            <span style="color:#66d9ef">return</span> Member(
              id: row[<span style="color:#e6db74">&#34;sid&#34;</span>],
              name: row[<span style="color:#e6db74">&#34;sname&#34;</span>],
              team: row[<span style="color:#e6db74">&#34;tname&#34;</span>],
            );
          });

          setState(() {
            _members <span style="color:#f92672">=</span> members.toList();
          });
          <span style="color:#75715e">// members.forEach();
</span><span style="color:#75715e"></span>        },
        child: Icon(Icons.refresh),
      ), <span style="color:#75715e">// This trailing comma makes auto-formatting nicer for build methods.
</span><span style="color:#75715e"></span>    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Member</span> {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> id;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> name;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> team;

  Member({<span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.id, <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.name, <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.team});
  <span style="color:#66d9ef">String</span> <span style="color:#66d9ef">get</span> avatarUrl <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;https://www.snh48.com/images/member/zp_</span><span style="color:#e6db74">${</span>id<span style="color:#e6db74">}</span><span style="color:#e6db74">.jpg&#34;</span>;
  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">String</span> toString() <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;</span><span style="color:#e6db74">$</span>id<span style="color:#e6db74">:</span><span style="color:#e6db74">$</span>name<span style="color:#e6db74">&#34;</span>;
}

</code></pre></div><div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/material.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/rendering.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:http/http.dart&#39;</span> <span style="color:#66d9ef">as</span> http;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;dart:convert&#39;</span> <span style="color:#66d9ef">as</span> convert;

<span style="color:#66d9ef">void</span> main() {
  runApp(MyApp());
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyApp</span> <span style="color:#66d9ef">extends</span> StatelessWidget {
  <span style="color:#75715e">// This widget is the root of your application.
</span><span style="color:#75715e"></span>  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> MaterialApp(
      title: <span style="color:#e6db74">&#39;Flutter Demo&#39;</span>,
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: <span style="color:#e6db74">&#39;Flutter Demo Home Page&#39;</span>),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyHomePage</span> <span style="color:#66d9ef">extends</span> StatefulWidget {
  MyHomePage({Key key, <span style="color:#66d9ef">this</span>.title}) <span style="color:#f92672">:</span> <span style="color:#66d9ef">super</span>(key: key);

  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  _MyHomePageState createState() <span style="color:#f92672">=&gt;</span> _MyHomePageState();
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyHomePageState</span> <span style="color:#66d9ef">extends</span> State<span style="color:#f92672">&lt;</span>MyHomePage<span style="color:#f92672">&gt;</span> {
  List<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span> _members <span style="color:#f92672">=</span> [];
  SliverList _buildTeamList(<span style="color:#66d9ef">String</span> teamName) {
    <span style="color:#66d9ef">final</span> teamMembers <span style="color:#f92672">=</span> _members.where((m) <span style="color:#f92672">=&gt;</span> m.team <span style="color:#f92672">==</span> teamName).toList();
    <span style="color:#66d9ef">return</span> SliverList(
      delegate: SliverChildBuilderDelegate((BuildContext co, <span style="color:#66d9ef">int</span> index) {
        <span style="color:#66d9ef">final</span> m <span style="color:#f92672">=</span> teamMembers[index];
        <span style="color:#66d9ef">return</span> ListTile(
          leading: ClipOval(
            child: CircleAvatar(
              radius: <span style="color:#ae81ff">32</span>,
              child: Image.network(
                m.avatarUrl,
              ),
              backgroundColor: Colors.pink,
            ),
          ),
          title: Text(
            m.id,
          ),
          subtitle: Text(
            m.name,
          ),
          trailing: Text(m.team),
        );
      }, childCount: teamMembers.length),
    );
  }

  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> Scaffold(
      appBar: AppBar(),
      body: CustomScrollView(
        slivers: [
          SliverPersistentHeader(
            delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team SII&#34;</span>, Color(<span style="color:#ae81ff">0xff91cdeb</span>)),
            pinned: <span style="color:#66d9ef">true</span>,
          ),
          _buildTeamList(<span style="color:#e6db74">&#34;SII&#34;</span>),
          SliverPersistentHeader(
            delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team NII&#34;</span>, Color(<span style="color:#ae81ff">0xffae86bb</span>)),
            pinned: <span style="color:#66d9ef">true</span>,
          ),
          _buildTeamList(<span style="color:#e6db74">&#34;NII&#34;</span>),
          SliverPersistentHeader(
            delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team HII&#34;</span>, Color(<span style="color:#ae81ff">0xfff39800</span>)),
            pinned: <span style="color:#66d9ef">true</span>,
          ),
          _buildTeamList(<span style="color:#e6db74">&#34;HII&#34;</span>),
          SliverPersistentHeader(
            delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team X&#34;</span>, Color(<span style="color:#ae81ff">0xff91cd5b</span>)),
            pinned: <span style="color:#66d9ef">true</span>,
          ),
          _buildTeamList(<span style="color:#e6db74">&#34;X&#34;</span>),
        ],
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () <span style="color:#66d9ef">async</span> {
          <span style="color:#66d9ef">final</span> url <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;https://h5.48.cn/resource/jsonp/allmembers.php?gid=10&#34;</span>;
          <span style="color:#66d9ef">final</span> res <span style="color:#f92672">=</span> <span style="color:#66d9ef">await</span> http.<span style="color:#66d9ef">get</span>(url);

          <span style="color:#66d9ef">if</span> (res.statusCode <span style="color:#f92672">!=</span> <span style="color:#ae81ff">200</span>) {
            <span style="color:#66d9ef">throw</span> (<span style="color:#e6db74">&#34;erroe&#34;</span>);
          }

          print(res.body);
          <span style="color:#66d9ef">final</span> json <span style="color:#f92672">=</span> convert.jsonDecode(res.body);

          <span style="color:#66d9ef">final</span> members <span style="color:#f92672">=</span> json[<span style="color:#e6db74">&#34;rows&#34;</span>].map<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span>((row) {
            <span style="color:#66d9ef">return</span> Member(
              id: row[<span style="color:#e6db74">&#34;sid&#34;</span>],
              name: row[<span style="color:#e6db74">&#34;sname&#34;</span>],
              team: row[<span style="color:#e6db74">&#34;tname&#34;</span>],
            );
          });

          setState(() {
            _members <span style="color:#f92672">=</span> members.toList();
          });
          <span style="color:#75715e">// members.forEach();
</span><span style="color:#75715e"></span>        },
        child: Icon(Icons.refresh),
      ), <span style="color:#75715e">// This trailing comma makes auto-formatting nicer for build methods.
</span><span style="color:#75715e"></span>    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyDelegate</span> <span style="color:#66d9ef">extends</span> SliverPersistentHeaderDelegate {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;
  <span style="color:#66d9ef">final</span> Color color;

  _MyDelegate(<span style="color:#66d9ef">this</span>.title, <span style="color:#66d9ef">this</span>.color);

  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(
      BuildContext context, <span style="color:#66d9ef">double</span> shrinkOffset, <span style="color:#66d9ef">bool</span> overlapsContent) {
    <span style="color:#66d9ef">return</span> Container(
        height: <span style="color:#ae81ff">50</span>, color: color, child: FittedBox(child: Text(title)));
  }

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">double</span> <span style="color:#66d9ef">get</span> maxExtent <span style="color:#f92672">=&gt;</span> <span style="color:#ae81ff">50</span>;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">double</span> <span style="color:#66d9ef">get</span> minExtent <span style="color:#f92672">=&gt;</span> <span style="color:#ae81ff">50</span>;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">bool</span> shouldRebuild(covariant _MyDelegate oldDelegate) {
    <span style="color:#75715e">// return oldDelegate.title != title;
</span><span style="color:#75715e"></span>    <span style="color:#66d9ef">return</span> <span style="color:#66d9ef">true</span>;
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Member</span> {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> id;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> name;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> team;

  Member({<span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.id, <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.name, <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.team});
  <span style="color:#66d9ef">String</span> <span style="color:#66d9ef">get</span> avatarUrl <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;https://www.snh48.com/images/member/zp_</span><span style="color:#e6db74">${</span>id<span style="color:#e6db74">}</span><span style="color:#e6db74">.jpg&#34;</span>;
  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">String</span> toString() <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;</span><span style="color:#e6db74">$</span>id<span style="color:#e6db74">:</span><span style="color:#e6db74">$</span>name<span style="color:#e6db74">&#34;</span>;
}

</code></pre></div><p>
        <a data-fancybox="gallery" href="https://luckly007.oss-cn-beijing.aliyuncs.com/img/image-20210807235408071.png">
            <img class="mx-auto" alt="image-20210807235408071" src="https://luckly007.oss-cn-beijing.aliyuncs.com/img/image-20210807235408071.png" />
        </a>
    </p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/material.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/rendering.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:http/http.dart&#39;</span> <span style="color:#66d9ef">as</span> http;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;dart:convert&#39;</span> <span style="color:#66d9ef">as</span> convert;

<span style="color:#66d9ef">void</span> main() {
  runApp(MyApp());
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyApp</span> <span style="color:#66d9ef">extends</span> StatelessWidget {
  <span style="color:#75715e">// This widget is the root of your application.
</span><span style="color:#75715e"></span>  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> MaterialApp(
      title: <span style="color:#e6db74">&#39;Flutter Demo&#39;</span>,
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: <span style="color:#e6db74">&#39;Flutter Demo Home Page&#39;</span>),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyHomePage</span> <span style="color:#66d9ef">extends</span> StatefulWidget {
  MyHomePage({Key key, <span style="color:#66d9ef">this</span>.title}) <span style="color:#f92672">:</span> <span style="color:#66d9ef">super</span>(key: key);

  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  _MyHomePageState createState() <span style="color:#f92672">=&gt;</span> _MyHomePageState();
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyHomePageState</span> <span style="color:#66d9ef">extends</span> State<span style="color:#f92672">&lt;</span>MyHomePage<span style="color:#f92672">&gt;</span> {
  List<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span> _members <span style="color:#f92672">=</span> [];
  SliverGrid _buildTeamList(<span style="color:#66d9ef">String</span> teamName) {
    <span style="color:#66d9ef">final</span> teamMembers <span style="color:#f92672">=</span> _members.where((m) <span style="color:#f92672">=&gt;</span> m.team <span style="color:#f92672">==</span> teamName).toList();
    <span style="color:#66d9ef">return</span> SliverGrid(
      delegate: SliverChildBuilderDelegate((BuildContext co, <span style="color:#66d9ef">int</span> index) {
        <span style="color:#66d9ef">final</span> m <span style="color:#f92672">=</span> teamMembers[index];
        <span style="color:#66d9ef">return</span> InkWell(
          onTap: () {},
          child: Container(
            alignment: Alignment.center,
            child: Column(children: [
              ClipOval(
                child: CircleAvatar(
                  radius: <span style="color:#ae81ff">32</span>,
                  child: Image.network(
                    m.avatarUrl,
                  ),
                  backgroundColor: Colors.pink,
                ),
              ),
              Text(m.name)
            ]),
          ),
        );
      }, childCount: teamMembers.length),
      gridDelegate:
          SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: <span style="color:#ae81ff">4</span>),
    );
  }

  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> Scaffold(
      appBar: AppBar(),
      body: RefreshIndicator(
        onRefresh: () <span style="color:#66d9ef">async</span> {
          setState(() <span style="color:#f92672">=&gt;</span> _members.clear());

          <span style="color:#66d9ef">final</span> url <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;https://h5.48.cn/resource/jsonp/allmembers.php?gid=10&#34;</span>;
          <span style="color:#66d9ef">final</span> res <span style="color:#f92672">=</span> <span style="color:#66d9ef">await</span> http.<span style="color:#66d9ef">get</span>(url);

          <span style="color:#66d9ef">if</span> (res.statusCode <span style="color:#f92672">!=</span> <span style="color:#ae81ff">200</span>) {
            <span style="color:#66d9ef">throw</span> (<span style="color:#e6db74">&#34;erroe&#34;</span>);
          }

          print(res.body);
          <span style="color:#66d9ef">final</span> json <span style="color:#f92672">=</span> convert.jsonDecode(res.body);

          <span style="color:#66d9ef">final</span> members <span style="color:#f92672">=</span> json[<span style="color:#e6db74">&#34;rows&#34;</span>].map<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span>((row) {
            <span style="color:#66d9ef">return</span> Member(
              id: row[<span style="color:#e6db74">&#34;sid&#34;</span>],
              name: row[<span style="color:#e6db74">&#34;sname&#34;</span>],
              team: row[<span style="color:#e6db74">&#34;tname&#34;</span>],
            );
          });

          setState(() {
            _members <span style="color:#f92672">=</span> members.toList();
          });
        },
        child: Scrollbar(
          child: CustomScrollView(
            slivers: [
              SliverToBoxAdapter(),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team SII&#34;</span>, Color(<span style="color:#ae81ff">0xff91cdeb</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;SII&#34;</span>),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team NII&#34;</span>, Color(<span style="color:#ae81ff">0xffae86bb</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;NII&#34;</span>),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team HII&#34;</span>, Color(<span style="color:#ae81ff">0xfff39800</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;HII&#34;</span>),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team X&#34;</span>, Color(<span style="color:#ae81ff">0xff91cd5b</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;X&#34;</span>),
            ],
          ),
        ),
      ),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyDelegate</span> <span style="color:#66d9ef">extends</span> SliverPersistentHeaderDelegate {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;
  <span style="color:#66d9ef">final</span> Color color;

  _MyDelegate(<span style="color:#66d9ef">this</span>.title, <span style="color:#66d9ef">this</span>.color);

  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(
      BuildContext context, <span style="color:#66d9ef">double</span> shrinkOffset, <span style="color:#66d9ef">bool</span> overlapsContent) {
    <span style="color:#66d9ef">return</span> Container(
        height: <span style="color:#ae81ff">50</span>, color: color, child: FittedBox(child: Text(title)));
  }

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">double</span> <span style="color:#66d9ef">get</span> maxExtent <span style="color:#f92672">=&gt;</span> <span style="color:#ae81ff">50</span>;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">double</span> <span style="color:#66d9ef">get</span> minExtent <span style="color:#f92672">=&gt;</span> <span style="color:#ae81ff">50</span>;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">bool</span> shouldRebuild(covariant _MyDelegate oldDelegate) {
    <span style="color:#75715e">// return oldDelegate.title != title;
</span><span style="color:#75715e"></span>    <span style="color:#66d9ef">return</span> <span style="color:#66d9ef">true</span>;
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Member</span> {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> id;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> name;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> team;

  Member({<span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.id, <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.name, <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.team});
  <span style="color:#66d9ef">String</span> <span style="color:#66d9ef">get</span> avatarUrl <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;https://www.snh48.com/images/member/zp_</span><span style="color:#e6db74">${</span>id<span style="color:#e6db74">}</span><span style="color:#e6db74">.jpg&#34;</span>;
  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">String</span> toString() <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;</span><span style="color:#e6db74">$</span>id<span style="color:#e6db74">:</span><span style="color:#e6db74">$</span>name<span style="color:#e6db74">&#34;</span>;
}

</code></pre></div><p>
        <a data-fancybox="gallery" href="https://luckly007.oss-cn-beijing.aliyuncs.com/img/image-20210808090619595.png">
            <img class="mx-auto" alt="image-20210808090619595" src="https://luckly007.oss-cn-beijing.aliyuncs.com/img/image-20210808090619595.png" />
        </a>
    </p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/material.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/rendering.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:http/http.dart&#39;</span> <span style="color:#66d9ef">as</span> http;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;dart:convert&#39;</span> <span style="color:#66d9ef">as</span> convert;

<span style="color:#66d9ef">void</span> main() {
  runApp(MyApp());
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyApp</span> <span style="color:#66d9ef">extends</span> StatelessWidget {
  <span style="color:#75715e">// This widget is the root of your application.
</span><span style="color:#75715e"></span>  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> MaterialApp(
      title: <span style="color:#e6db74">&#39;Flutter Demo&#39;</span>,
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: <span style="color:#e6db74">&#39;Flutter Demo Home Page&#39;</span>),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyHomePage</span> <span style="color:#66d9ef">extends</span> StatefulWidget {
  MyHomePage({Key key, <span style="color:#66d9ef">this</span>.title}) <span style="color:#f92672">:</span> <span style="color:#66d9ef">super</span>(key: key);

  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  _MyHomePageState createState() <span style="color:#f92672">=&gt;</span> _MyHomePageState();
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyHomePageState</span> <span style="color:#66d9ef">extends</span> State<span style="color:#f92672">&lt;</span>MyHomePage<span style="color:#f92672">&gt;</span> {
  List<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span> _members <span style="color:#f92672">=</span> [];
  SliverGrid _buildTeamList(<span style="color:#66d9ef">String</span> teamName) {
    <span style="color:#66d9ef">final</span> teamMembers <span style="color:#f92672">=</span> _members.where((m) <span style="color:#f92672">=&gt;</span> m.team <span style="color:#f92672">==</span> teamName).toList();
    <span style="color:#66d9ef">return</span> SliverGrid(
      delegate: SliverChildBuilderDelegate((BuildContext co, <span style="color:#66d9ef">int</span> index) {
        <span style="color:#66d9ef">final</span> m <span style="color:#f92672">=</span> teamMembers[index];
        <span style="color:#66d9ef">return</span> InkWell(
          onTap: () {
            Navigator.of(context).push(MaterialPageRoute(
                builder: (_) <span style="color:#f92672">=&gt;</span> DetailPage(
                      member: m,
                    )));
          },
          child: Container(
            alignment: Alignment.center,
            child:
                Column(mainAxisAlignment: MainAxisAlignment.center, children: [
              ClipOval(
                child: CircleAvatar(
                  radius: <span style="color:#ae81ff">32</span>,
                  child: Image.network(
                    m.avatarUrl,
                  ),
                  backgroundColor: Colors.pink,
                ),
              ),
              Text(m.name)
            ]),
          ),
        );
      }, childCount: teamMembers.length),
      gridDelegate:
          SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: <span style="color:#ae81ff">4</span>),
    );
  }

  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> Scaffold(
      appBar: AppBar(),
      body: RefreshIndicator(
        onRefresh: () <span style="color:#66d9ef">async</span> {
          setState(() <span style="color:#f92672">=&gt;</span> _members.clear());

          <span style="color:#66d9ef">final</span> url <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;https://h5.48.cn/resource/jsonp/allmembers.php?gid=10&#34;</span>;
          <span style="color:#66d9ef">final</span> res <span style="color:#f92672">=</span> <span style="color:#66d9ef">await</span> http.<span style="color:#66d9ef">get</span>(url);

          <span style="color:#66d9ef">if</span> (res.statusCode <span style="color:#f92672">!=</span> <span style="color:#ae81ff">200</span>) {
            <span style="color:#66d9ef">throw</span> (<span style="color:#e6db74">&#34;erroe&#34;</span>);
          }

          print(res.body);
          <span style="color:#66d9ef">final</span> json <span style="color:#f92672">=</span> convert.jsonDecode(res.body);

          <span style="color:#66d9ef">final</span> members <span style="color:#f92672">=</span> json[<span style="color:#e6db74">&#34;rows&#34;</span>].map<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span>((row) {
            <span style="color:#66d9ef">return</span> Member(
              id: row[<span style="color:#e6db74">&#34;sid&#34;</span>],
              name: row[<span style="color:#e6db74">&#34;sname&#34;</span>],
              tid: row[<span style="color:#e6db74">&#34;tid&#34;</span>],
              pid: row[<span style="color:#e6db74">&#34;pid&#34;</span>],
              pname: row[<span style="color:#e6db74">&#34;pname&#34;</span>],
              team: row[<span style="color:#e6db74">&#34;tname&#34;</span>],
              pinyin: row[<span style="color:#e6db74">&#34;pinyin&#34;</span>],
              abbr: row[<span style="color:#e6db74">&#34;abbr&#34;</span>],
              nickname: row[<span style="color:#e6db74">&#34;nickname&#34;</span>],
              company: row[<span style="color:#e6db74">&#34;company&#34;</span>],
              join_day: row[<span style="color:#e6db74">&#34;join_day&#34;</span>],
              height: row[<span style="color:#e6db74">&#34;height&#34;</span>],
              birth_day: row[<span style="color:#e6db74">&#34;birth_day&#34;</span>],
              star_sign_12: row[<span style="color:#e6db74">&#34;star_sign_12&#34;</span>],
              star_sign_48: row[<span style="color:#e6db74">&#34;star_sign_48&#34;</span>],
              birth_place: row[<span style="color:#e6db74">&#34;birth_place&#34;</span>],
              speciality: row[<span style="color:#e6db74">&#34; speciality&#34;</span>],
              hobby: row[<span style="color:#e6db74">&#34;hobby&#34;</span>],
            );
          });

          setState(() {
            _members <span style="color:#f92672">=</span> members.toList();
          });
        },
        child: Scrollbar(
          child: CustomScrollView(
            slivers: [
              SliverToBoxAdapter(),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team SII&#34;</span>, Color(<span style="color:#ae81ff">0xff91cdeb</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;SII&#34;</span>),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team NII&#34;</span>, Color(<span style="color:#ae81ff">0xffae86bb</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;NII&#34;</span>),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team HII&#34;</span>, Color(<span style="color:#ae81ff">0xfff39800</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;HII&#34;</span>),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team X&#34;</span>, Color(<span style="color:#ae81ff">0xff91cd5b</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;X&#34;</span>),
            ],
          ),
        ),
      ),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyDelegate</span> <span style="color:#66d9ef">extends</span> SliverPersistentHeaderDelegate {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;
  <span style="color:#66d9ef">final</span> Color color;

  _MyDelegate(<span style="color:#66d9ef">this</span>.title, <span style="color:#66d9ef">this</span>.color);

  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(
      BuildContext context, <span style="color:#66d9ef">double</span> shrinkOffset, <span style="color:#66d9ef">bool</span> overlapsContent) {
    <span style="color:#66d9ef">return</span> Container(
        height: <span style="color:#ae81ff">50</span>, color: color, child: FittedBox(child: Text(title)));
  }

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">double</span> <span style="color:#66d9ef">get</span> maxExtent <span style="color:#f92672">=&gt;</span> <span style="color:#ae81ff">50</span>;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">double</span> <span style="color:#66d9ef">get</span> minExtent <span style="color:#f92672">=&gt;</span> <span style="color:#ae81ff">50</span>;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">bool</span> shouldRebuild(covariant _MyDelegate oldDelegate) {
    <span style="color:#75715e">// return oldDelegate.title != title;
</span><span style="color:#75715e"></span>    <span style="color:#66d9ef">return</span> <span style="color:#66d9ef">true</span>;
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Member</span> {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> id;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> name;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> team; <span style="color:#75715e">// 多光标快捷键  alt+shift
</span><span style="color:#75715e"></span>
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> pinyin;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> abbr;

  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> nickname;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> company;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> join_day;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> height;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> birth_day;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> star_sign_12;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> star_sign_48;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> birth_place;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> speciality;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> hobby;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> tid;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> pid;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> pname;

  Member({
    <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.id,
    <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.name,
    <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.team,
    <span style="color:#66d9ef">this</span>.pinyin,
    <span style="color:#66d9ef">this</span>.abbr,
    <span style="color:#66d9ef">this</span>.nickname,
    <span style="color:#66d9ef">this</span>.company,
    <span style="color:#66d9ef">this</span>.join_day,
    <span style="color:#66d9ef">this</span>.height,
    <span style="color:#66d9ef">this</span>.birth_day,
    <span style="color:#66d9ef">this</span>.star_sign_12,
    <span style="color:#66d9ef">this</span>.star_sign_48,
    <span style="color:#66d9ef">this</span>.birth_place,
    <span style="color:#66d9ef">this</span>.speciality,
    <span style="color:#66d9ef">this</span>.hobby,
    <span style="color:#66d9ef">this</span>.tid,
    <span style="color:#66d9ef">this</span>.pid,
    <span style="color:#66d9ef">this</span>.pname,
  });
  <span style="color:#66d9ef">String</span> <span style="color:#66d9ef">get</span> avatarUrl <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;https://www.snh48.com/images/member/zp_</span><span style="color:#e6db74">${</span>id<span style="color:#e6db74">}</span><span style="color:#e6db74">.jpg&#34;</span>;
  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">String</span> toString() <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;</span><span style="color:#e6db74">$</span>id<span style="color:#e6db74">:</span><span style="color:#e6db74">$</span>name<span style="color:#e6db74">&#34;</span>;
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">DetailPage</span> <span style="color:#66d9ef">extends</span> StatelessWidget {
  <span style="color:#66d9ef">final</span> Member member;

  <span style="color:#66d9ef">const</span> DetailPage({Key key, <span style="color:#66d9ef">this</span>.member}) <span style="color:#f92672">:</span> <span style="color:#66d9ef">super</span>(key: key);

  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> Scaffold(
      appBar: AppBar(
        title: Text(member.name),
      ),
      body: Column(
        children: [
          _buildInfo(<span style="color:#e6db74">&#34;pinyin&#34;</span>, member.pinyin),
          _buildInfo(<span style="color:#e6db74">&#34;加入所属&#34;</span>, member.pname),

          _buildInfo(<span style="color:#e6db74">&#34;昵称&#34;</span>, member.nickname),
          _buildInfo(<span style="color:#e6db74">&#34;公司&#34;</span>, member.company),
          _buildInfo(<span style="color:#e6db74">&#34;加入日期&#34;</span>, member.join_day),
          _buildInfo(<span style="color:#e6db74">&#34;身高&#34;</span>, <span style="color:#e6db74">&#34;</span><span style="color:#e6db74">${</span>member.height<span style="color:#e6db74">}</span><span style="color:#e6db74">cm&#34;</span>),
          _buildInfo(<span style="color:#e6db74">&#34;生日&#34;</span>, member.birth_day),
          _buildInfo(<span style="color:#e6db74">&#34;星座&#34;</span>, member.star_sign_12), <span style="color:#75715e">//zodic sign
</span><span style="color:#75715e"></span>
          _buildInfo(<span style="color:#e6db74">&#34;爱好&#34;</span>, member.hobby),
          <span style="color:#75715e">// Text(member.speciality),
</span><span style="color:#75715e"></span>        ],
      ),
    );
  }

  _buildInfo(<span style="color:#66d9ef">String</span> title, <span style="color:#66d9ef">String</span> text) {
    <span style="color:#66d9ef">return</span> Card(
      child: Padding(
        padding: EdgeInsets.all(<span style="color:#ae81ff">10</span>),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            Text(title),
            Text(
              text,
              textAlign: TextAlign.end,
            ),
          ],
        ),
      ),
    );
  }
}

</code></pre></div><p>最终版</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/material.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/rendering.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:http/http.dart&#39;</span> <span style="color:#66d9ef">as</span> http;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;dart:convert&#39;</span> <span style="color:#66d9ef">as</span> convert;

<span style="color:#66d9ef">void</span> main() {
  runApp(MyApp());
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyApp</span> <span style="color:#66d9ef">extends</span> StatelessWidget {
  <span style="color:#75715e">// This widget is the root of your application.
</span><span style="color:#75715e"></span>  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> MaterialApp(
      title: <span style="color:#e6db74">&#39;Flutter Demo&#39;</span>,
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: <span style="color:#e6db74">&#39;Flutter Demo Home Page&#39;</span>),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyHomePage</span> <span style="color:#66d9ef">extends</span> StatefulWidget {
  MyHomePage({Key key, <span style="color:#66d9ef">this</span>.title}) <span style="color:#f92672">:</span> <span style="color:#66d9ef">super</span>(key: key);

  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  _MyHomePageState createState() <span style="color:#f92672">=&gt;</span> _MyHomePageState();
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyHomePageState</span> <span style="color:#66d9ef">extends</span> State<span style="color:#f92672">&lt;</span>MyHomePage<span style="color:#f92672">&gt;</span> {
  List<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span> _members <span style="color:#f92672">=</span> [];
  SliverGrid _buildTeamList(<span style="color:#66d9ef">String</span> teamName) {
    <span style="color:#66d9ef">final</span> teamMembers <span style="color:#f92672">=</span> _members.where((m) <span style="color:#f92672">=&gt;</span> m.team <span style="color:#f92672">==</span> teamName).toList();
    <span style="color:#66d9ef">return</span> SliverGrid(
      delegate: SliverChildBuilderDelegate((BuildContext co, <span style="color:#66d9ef">int</span> index) {
        <span style="color:#66d9ef">final</span> m <span style="color:#f92672">=</span> teamMembers[index];
        <span style="color:#66d9ef">return</span> InkWell(
          onTap: () {
            Navigator.of(context).push(MaterialPageRoute(
                builder: (_) <span style="color:#f92672">=&gt;</span> DetailPage(
                      member: m,
                    )));
          },
          child: Container(
            alignment: Alignment.center,
            child:
                Column(mainAxisAlignment: MainAxisAlignment.center, children: [
              Hero(
                tag: m.avatarUrl,
                child: ClipOval(
                  child: CircleAvatar(
                    radius: <span style="color:#ae81ff">32</span>,
                    child: Image.network(
                      m.avatarUrl,
                    ),
                    backgroundColor: Colors.pink,
                  ),
                ),
              ),
              Text(m.name)
            ]),
          ),
        );
      }, childCount: teamMembers.length),
      gridDelegate:
          SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: <span style="color:#ae81ff">4</span>),
    );
  }

  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> Scaffold(
      appBar: AppBar(),
      body: RefreshIndicator(
        onRefresh: () <span style="color:#66d9ef">async</span> {
          setState(() <span style="color:#f92672">=&gt;</span> _members.clear());

          <span style="color:#66d9ef">final</span> url <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;https://h5.48.cn/resource/jsonp/allmembers.php?gid=10&#34;</span>;
          <span style="color:#66d9ef">final</span> res <span style="color:#f92672">=</span> <span style="color:#66d9ef">await</span> http.<span style="color:#66d9ef">get</span>(url);

          <span style="color:#66d9ef">if</span> (res.statusCode <span style="color:#f92672">!=</span> <span style="color:#ae81ff">200</span>) {
            <span style="color:#66d9ef">throw</span> (<span style="color:#e6db74">&#34;erroe&#34;</span>);
          }

          print(res.body);
          <span style="color:#66d9ef">final</span> json <span style="color:#f92672">=</span> convert.jsonDecode(res.body);

          <span style="color:#66d9ef">final</span> members <span style="color:#f92672">=</span> json[<span style="color:#e6db74">&#34;rows&#34;</span>].map<span style="color:#f92672">&lt;</span>Member<span style="color:#f92672">&gt;</span>((row) {
            <span style="color:#66d9ef">return</span> Member(
              id: row[<span style="color:#e6db74">&#34;sid&#34;</span>],
              name: row[<span style="color:#e6db74">&#34;sname&#34;</span>],
              tid: row[<span style="color:#e6db74">&#34;tid&#34;</span>],
              pid: row[<span style="color:#e6db74">&#34;pid&#34;</span>],
              pname: row[<span style="color:#e6db74">&#34;pname&#34;</span>],
              team: row[<span style="color:#e6db74">&#34;tname&#34;</span>],
              pinyin: row[<span style="color:#e6db74">&#34;pinyin&#34;</span>],
              abbr: row[<span style="color:#e6db74">&#34;abbr&#34;</span>],
              nickname: row[<span style="color:#e6db74">&#34;nickname&#34;</span>],
              company: row[<span style="color:#e6db74">&#34;company&#34;</span>],
              join_day: row[<span style="color:#e6db74">&#34;join_day&#34;</span>],
              height: row[<span style="color:#e6db74">&#34;height&#34;</span>],
              birth_day: row[<span style="color:#e6db74">&#34;birth_day&#34;</span>],
              star_sign_12: row[<span style="color:#e6db74">&#34;star_sign_12&#34;</span>],
              star_sign_48: row[<span style="color:#e6db74">&#34;star_sign_48&#34;</span>],
              birth_place: row[<span style="color:#e6db74">&#34;birth_place&#34;</span>],
              speciality: row[<span style="color:#e6db74">&#34; speciality&#34;</span>],
              hobby: row[<span style="color:#e6db74">&#34;hobby&#34;</span>],
            );
          });

          setState(() {
            _members <span style="color:#f92672">=</span> members.toList();
          });
        },
        child: Scrollbar(
          child: CustomScrollView(
            slivers: [
              SliverToBoxAdapter(),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team SII&#34;</span>, Color(<span style="color:#ae81ff">0xff91cdeb</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;SII&#34;</span>),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team NII&#34;</span>, Color(<span style="color:#ae81ff">0xffae86bb</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;NII&#34;</span>),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team HII&#34;</span>, Color(<span style="color:#ae81ff">0xfff39800</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;HII&#34;</span>),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;Team X&#34;</span>, Color(<span style="color:#ae81ff">0xff91cd5b</span>)),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;X&#34;</span>),
              SliverPersistentHeader(
                delegate: _MyDelegate(<span style="color:#e6db74">&#34;预备生&#34;</span>, Colors.green),
                pinned: <span style="color:#66d9ef">true</span>,
              ),
              _buildTeamList(<span style="color:#e6db74">&#34;预备生&#34;</span>),
            ],
          ),
        ),
      ),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_MyDelegate</span> <span style="color:#66d9ef">extends</span> SliverPersistentHeaderDelegate {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> title;
  <span style="color:#66d9ef">final</span> Color color;

  _MyDelegate(<span style="color:#66d9ef">this</span>.title, <span style="color:#66d9ef">this</span>.color);

  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(
      BuildContext context, <span style="color:#66d9ef">double</span> shrinkOffset, <span style="color:#66d9ef">bool</span> overlapsContent) {
    <span style="color:#66d9ef">return</span> Container(
        height: <span style="color:#ae81ff">50</span>, color: color, child: FittedBox(child: Text(title)));
  }

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">double</span> <span style="color:#66d9ef">get</span> maxExtent <span style="color:#f92672">=&gt;</span> <span style="color:#ae81ff">50</span>;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">double</span> <span style="color:#66d9ef">get</span> minExtent <span style="color:#f92672">=&gt;</span> <span style="color:#ae81ff">50</span>;

  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">bool</span> shouldRebuild(covariant _MyDelegate oldDelegate) {
    <span style="color:#75715e">// return oldDelegate.title != title;
</span><span style="color:#75715e"></span>    <span style="color:#66d9ef">return</span> <span style="color:#66d9ef">true</span>;
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Member</span> {
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> id;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> name;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> team; <span style="color:#75715e">// 多光标快捷键  alt+shift
</span><span style="color:#75715e"></span>
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> pinyin;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> abbr;

  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> nickname;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> company;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> join_day;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> height;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> birth_day;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> star_sign_12;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> star_sign_48;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> birth_place;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> speciality;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> hobby;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> tid;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> pid;
  <span style="color:#66d9ef">final</span> <span style="color:#66d9ef">String</span> pname;

  Member({
    <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.id,
    <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.name,
    <span style="color:#960050;background-color:#1e0010">@</span>required <span style="color:#66d9ef">this</span>.team,
    <span style="color:#66d9ef">this</span>.pinyin,
    <span style="color:#66d9ef">this</span>.abbr,
    <span style="color:#66d9ef">this</span>.nickname,
    <span style="color:#66d9ef">this</span>.company,
    <span style="color:#66d9ef">this</span>.join_day,
    <span style="color:#66d9ef">this</span>.height,
    <span style="color:#66d9ef">this</span>.birth_day,
    <span style="color:#66d9ef">this</span>.star_sign_12,
    <span style="color:#66d9ef">this</span>.star_sign_48,
    <span style="color:#66d9ef">this</span>.birth_place,
    <span style="color:#66d9ef">this</span>.speciality,
    <span style="color:#66d9ef">this</span>.hobby,
    <span style="color:#66d9ef">this</span>.tid,
    <span style="color:#66d9ef">this</span>.pid,
    <span style="color:#66d9ef">this</span>.pname,
  });
  <span style="color:#66d9ef">String</span> <span style="color:#66d9ef">get</span> avatarUrl <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;https://www.snh48.com/images/member/zp_</span><span style="color:#e6db74">${</span>id<span style="color:#e6db74">}</span><span style="color:#e6db74">.jpg&#34;</span>;
  <span style="color:#960050;background-color:#1e0010">@</span>override
  <span style="color:#66d9ef">String</span> toString() <span style="color:#f92672">=&gt;</span> <span style="color:#e6db74">&#34;</span><span style="color:#e6db74">$</span>id<span style="color:#e6db74">:</span><span style="color:#e6db74">$</span>name<span style="color:#e6db74">&#34;</span>;
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">DetailPage</span> <span style="color:#66d9ef">extends</span> StatelessWidget {
  <span style="color:#66d9ef">final</span> Member member;

  <span style="color:#66d9ef">const</span> DetailPage({Key key, <span style="color:#66d9ef">this</span>.member}) <span style="color:#f92672">:</span> <span style="color:#66d9ef">super</span>(key: key);

  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> Scaffold(
        body: CustomScrollView(
      slivers: [
        SliverAppBar(
          leading: BackButton(
            color: Colors.black,
          ),
          pinned: <span style="color:#66d9ef">true</span>,
          <span style="color:#75715e">// stretch: true,
</span><span style="color:#75715e"></span>          backgroundColor: Colors.pink[<span style="color:#ae81ff">200</span>],
          expandedHeight: <span style="color:#ae81ff">300</span>,
          flexibleSpace: FlexibleSpaceBar(
            title: Text(
              <span style="color:#e6db74">&#34;SNH48-</span><span style="color:#e6db74">${</span>member.name<span style="color:#e6db74">}</span><span style="color:#e6db74">&#34;</span>,
              style: TextStyle(color: Colors.black),
            ),
            background: Stack(
              children: [
                Column(
                  children: [
                    Expanded(
                      child: Image.network(
                        <span style="color:#e6db74">&#34;https://png.pngtree.com/thumb_back/fh260/back_our/20190628/ourmid/pngtree-white-lines-pink-background-image_269454.jpg&#34;</span>,
                        fit: BoxFit.cover,
                      ),
                    ),
                    Container(
                      height: <span style="color:#ae81ff">5</span>,
                      color: Colors.pink[<span style="color:#ae81ff">400</span>],
                    ),
                    Expanded(child: SizedBox()),
                  ],
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                ),
                Center(
                  child: Padding(
                    padding: <span style="color:#66d9ef">const</span> EdgeInsets.all(<span style="color:#ae81ff">100.0</span>),
                    child: AspectRatio(
                      aspectRatio: <span style="color:#ae81ff">1</span> <span style="color:#f92672">/</span> <span style="color:#ae81ff">1</span>,
                      child: Hero(
                        tag: member.avatarUrl,
                        child: Material(
                          shape: CircleBorder(),
                          elevation: <span style="color:#ae81ff">4.0</span>,
                          child: ClipOval(
                            child: Image.network(
                              member.avatarUrl,
                              fit: BoxFit.cover,
                            ),
                          ),
                        ),
                      ),
                    ),
                  ),
                ),
              ],
            ),
            collapseMode: CollapseMode.pin,
          ),
        ),
        SliverList(
            delegate: SliverChildListDelegate([
          _buildInfo(<span style="color:#e6db74">&#34;pinyin&#34;</span>, member.pinyin),
          _buildInfo(<span style="color:#e6db74">&#34;加入所属&#34;</span>, member.pname),

          _buildInfo(<span style="color:#e6db74">&#34;昵称&#34;</span>, member.nickname),
          _buildInfo(<span style="color:#e6db74">&#34;公司&#34;</span>, member.company),
          _buildInfo(<span style="color:#e6db74">&#34;加入日期&#34;</span>, member.join_day),
          _buildInfo(<span style="color:#e6db74">&#34;身高&#34;</span>, <span style="color:#e6db74">&#34;</span><span style="color:#e6db74">${</span>member.height<span style="color:#e6db74">}</span><span style="color:#e6db74">cm&#34;</span>),
          _buildInfo(<span style="color:#e6db74">&#34;生日&#34;</span>, member.birth_day),
          _buildInfo(<span style="color:#e6db74">&#34;星座&#34;</span>, member.star_sign_12), <span style="color:#75715e">//zodic sign
</span><span style="color:#75715e"></span>
          _buildInfo(<span style="color:#e6db74">&#34;爱好&#34;</span>, member.hobby), _buildInfo(<span style="color:#e6db74">&#34;昵称&#34;</span>, member.nickname),
          _buildInfo(<span style="color:#e6db74">&#34;公司&#34;</span>, member.company),
          _buildInfo(<span style="color:#e6db74">&#34;加入日期&#34;</span>, member.join_day),
          _buildInfo(<span style="color:#e6db74">&#34;身高&#34;</span>, <span style="color:#e6db74">&#34;</span><span style="color:#e6db74">${</span>member.height<span style="color:#e6db74">}</span><span style="color:#e6db74">cm&#34;</span>),
          _buildInfo(<span style="color:#e6db74">&#34;生日&#34;</span>, member.birth_day),
          _buildInfo(<span style="color:#e6db74">&#34;星座&#34;</span>, member.star_sign_12), <span style="color:#75715e">//zodic sign
</span><span style="color:#75715e"></span>
          _buildInfo(<span style="color:#e6db74">&#34;爱好&#34;</span>, member.hobby),
          <span style="color:#75715e">// Text(member.speciality),
</span><span style="color:#75715e"></span>        ]))
      ],
    ));
  }

  _buildInfo(<span style="color:#66d9ef">String</span> title, <span style="color:#66d9ef">String</span> text) {
    <span style="color:#66d9ef">return</span> Card(
      child: Padding(
        padding: EdgeInsets.all(<span style="color:#ae81ff">10</span>),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            Text(title),
            Text(
              text,
              textAlign: TextAlign.end,
            ),
          ],
        ),
      ),
    );
  }
}

</code></pre></div>
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